Power VS: Check endpoints against lower case strings

Power VS endpoint validation in the API only allows for lower case
characters. However, the endpoint struct we check against is hardcoded
to be PascalCase. This patch checks against the lower case version of
the string to ensure it's recognized.

Author: mjturek

pkg/storage/ibmcos/ibmcos.go

@@ -9,6 +9,7 @@ import (
 	"net/url"
 	"path/filepath"
 	"reflect"
+	"strings"
 	"time"
 
 	"golang.org/x/net/http/httpproxy"
@@ -498,19 +499,19 @@ func (d *driver) setServiceEndpointOverrides(infra *configapiv1.Infrastructure)
 			if infra.Status.PlatformStatus.PowerVS != nil && len(infra.Status.PlatformStatus.PowerVS.ServiceEndpoints) > 0 {
 				for _, endpoint := range infra.Status.PlatformStatus.PowerVS.ServiceEndpoints {
 					switch endpoint.Name {
-					case string(configapiv1.IBMCloudServiceCOS):
+					case strings.ToLower(string(configapiv1.IBMCloudServiceCOS)):
 						klog.Infof("found override for ibmcloud cos endpoint: %s", endpoint.URL)
 						d.cosServiceEndpoint = endpoint.URL
-					case string(configapiv1.IBMCloudServiceIAM):
+					case strings.ToLower(string(configapiv1.IBMCloudServiceIAM)):
 						klog.Infof("found override for ibmcloud iam endpoint: %s", endpoint.URL)
 						d.iamServiceEndpoint = endpoint.URL
-					case string(configapiv1.IBMCloudServiceResourceController):
+					case strings.ToLower(string(configapiv1.IBMCloudServiceResourceController)):
 						klog.Infof("found override for ibmcloud resource controller endpoint: %s", endpoint.URL)
 						d.rcServiceEndpoint = endpoint.URL
-					case string(configapiv1.IBMCloudServiceResourceManager):
+					case strings.ToLower(string(configapiv1.IBMCloudServiceResourceManager)):
 						klog.Infof("found override for ibmcloud resource manager endpoint: %s", endpoint.URL)
 						d.rmServiceEndpoint = endpoint.URL
-					case string(configapiv1.IBMCloudServiceCIS), string(configapiv1.IBMCloudServiceDNSServices), string(configapiv1.IBMCloudServiceGlobalSearch), string(configapiv1.IBMCloudServiceGlobalTagging), string(configapiv1.IBMCloudServiceHyperProtect), string(configapiv1.IBMCloudServiceKeyProtect), string(configapiv1.IBMCloudServiceVPC):
+					case strings.ToLower(string(configapiv1.IBMCloudServiceCIS)), strings.ToLower(string(configapiv1.IBMCloudServiceDNSServices)), strings.ToLower(string(configapiv1.IBMCloudServiceGlobalSearch)), strings.ToLower(string(configapiv1.IBMCloudServiceGlobalTagging)), strings.ToLower(string(configapiv1.IBMCloudServiceHyperProtect)), strings.ToLower(string(configapiv1.IBMCloudServiceKeyProtect)), strings.ToLower(string(configapiv1.IBMCloudServiceVPC)):
 						klog.Infof("ignoring unused service endpoint: %s", endpoint.Name)
 					default:
 						klog.Infof("ignoring unknown service: %s", endpoint.Name)